Hardware projects using crystal
Open crystal hardware projects on BoardRepo. View the schematic, PCB, and BOM in your browser and download the sources, BOM, and Gerbers.
Projects
No description.
8-bit microcomputer built from commercially available and home-built components
Printed circuit boards. A container for all projects, successor to the older eagle repo.
Circuit diagrams and firmware source code for Gboard DIY keyboards
A versatile ESP32-C6 expansion board featuring Wi-Fi 6 and Bluetooth 5, designed for modular integration in proof-of-concept embedded projects. Supports QSPI, SPI, I2C, and UART interfaces for flexible connectivity with host MCUs. Ideal for IoT and wireless applications needing low-power, high-speed communication.
Bluetooth remote release for the Mamiya RZ67: ESP32-C3 firmware, KiCad PCB and enclosure. Shutter, bulb and countdown from your phone.
A custom icy-themed USB 2.0 hub with USB-C and USB-A ports, built around the SL2.1A hub controller and packaged in a custom 3D-printed case.
A 156 mm reaction-wheel cube that balances on its edge and corner — Lagrangian derivation, Simscape multibody simulation, per-corner LQR, and Teensy firmware validated against 373 s of flight telemetry.
NickLink v1.1 — compact STM32F103C8 breakout board (KiCad)
generic samd21g18a board based on arduino mkrzero
Full and open hardware design for FIRM
STM32 in TQFP64 packages
Mr. Koh ESP32-C3 RISC-V Development Board
Open-source Dual CAN FD and LIN shield for Teensy 4.1
DSO138の操作系サブシステム
Keyboard | Hall Effect | OrthoLinear | Programmable | Standard-sized
AVRDx uC module in Arduino Pro Mini format
design MCU Datalogger PCB using KiCad
A home weather station with internet connectivity
KiCAD Design files for Sonata PCB, part of the Sunburst Project
Hardware, software, and devlog of the Athan Lamp project.
Noninvasive electrode array with a plug-in sensor board, a front-end amplifier chain, and STM32H7B0 MCU to sample data and transfer to SD card or over USB CDC.
An STM32H743 development board with on-board USB-HS and CAN-FD (up to 8Mbit/s)
RP2040 Based devboard
Battery-powered ATmega328P data logger with RTC and dual EEPROM — designed in KiCad, optimized from 4-layer to 2-layer PCB.
poc pcbs for artsfest thing
Rebuild of a Transcell Model TCS3T-60LB
KiCad project for designing a 4x4 programmable mechanical macropad, including schematic and PCB layout.
KiCad project files for a BNO085 breakout board.
BugCON Badge 2025
Badge HackGDL 2026
ESP32-P4 all in one computer with x4 USB hosts Audio, HDMI, MIPI CSI, MIPI DSI, LiPo battery operation, Ethernet with POE
Development board for GateMateA1 CCGM1A1 FPGA from Cologne Chip with PS2 VGA 64Mbit RAM RP2040
The Vulnerable Satellite Hacking Platform for Learning Through Research
Development board for ESP32-P4 Dual core RISCV processor from Espressif
KiCad hardware design for a battery-powered Bluetooth speaker — STM32WB15 BLE SoC, TDA7297 audio amplifier, switching power regulation.
Schematic and PCB fo simple custom retro gamepad
RC helicopter remote control based on an STM32 MCU
Mockingbird-Dual-Lane-Card A dual subscriber line card for the Mockingbird Telephone Exchange
A PCB board that enables the use of a AM9511 Arithmetic processor on a TRS-80 Model II.
Open-source PIC18(L)F45K50 module board
Archival hardware/firmware for the MM54104 Digitalker chip
Open-source OBD-II simulator board: emulates a vehicle ECU per SAE J1979 and ISO 15031-5 over CAN. ESP32-S3 + MCP2515, 21 simulated parameters, DTC bank with MIL.
Teensy 2.0 Risc-V dropin Arduino promicro lookalike with special features
Breakout and Development board for the ATmega32u4-MU MCU from Atmel
A christmas card made from a PCB with a STM32, LED display, buttons, and buzzer.
ATSAML1x Breakout Board
Ethernet Breakout Board based on Microchip's ENC82J60
A hex-based modular system to build custom nerf gun targets
KiCAD 6 project for a simple Atmega1281 Development Board designed for my ecore and sxchipset work
Lap timer, EKA 2 sem PWR
An eight-legged walking robot I built end to end: chassis CAD, a 24-servo ATmega32U4 controller board, the firmware, and a browser IK workbench you can drive it from.
DDT 8SwitchPanel Ui Panel for 8 Rocket Switches
MSX2+ FPGA implementation with bells and whistles.
KiCAD hardware schematic and layout files for the clackotron project
KiCad project for the SojournerST closed-loop Motor Driver Board
嵌入式自动化测试工具
Compact Black Pill STM32F411-based ARM Cortex-M4 development board offering high performance, USB-C power, and rich peripheral support for advanced embedded applications.
Boardoza PCF8563T RTC Breakout Board is a low-power I²C real-time clock module with battery backup support.
Compact Bluetooth 5.1 UART module breakout board using Raytac MDBT42TV-AT for low-power wireless data communication in embedded systems.